Rounded Cube sample for KHR_xmp_json_ld extension.

2.0/XmpMetadataRoundedCube/README.md

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+# KHR_xmp_json_ld Metadata Example - Rounded Cube
+
+## Sample XMP JSON
+
+```json
+{
+  "extensionsUsed": ["KHR_xmp_json_ld"],
+  "extensions": {
+    "KHR_xmp_json_ld": {
+      "packets": [
+        {
+          "@context": {
+            "dc": "http://purl.org/dc/elements/1.1/",
+            "rdf": "http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+          },
+          "@id": "",
+          "dc:contributor": {
+            "@set": [
+              "Creator1Name",
+              "Creator2Email@email.com",
+              "Creator3Name<Email@email.com>"
+            ]
+          },
+          "dc:coverage": "Bay Area, California, United States",
+          "dc:creator": {
+            "@list": ["CreatorName", "CreatorEmail@email.com"]
+          },
+          "dc:date": {
+            "@list": ["2019-05-16T19:20:30+01:00"]
+          },
+          "dc:description": {
+            "@type": "rdf:Alt",
+            "rdf:_1": {
+              "@language": "en-us",
+              "@value": "An example of a glTF file with XMP metadata in it"
+            }
+          },
+          "dc:format": "model/gltf+json",
+          "dc:language": {
+            "@set": ["en"]
+          },
+          "dc:publisher": {
+            "@set": ["Khronos"]
+          },
+          "dc:title": {
+            "@type": "rdf:Alt",
+            "rdf:_1": {
+              "@language": "en-us",
+              "@value": "Sample glTF with XMP metadata"
+            }
+          }
+        },
+        {
+          "@context": {
+            "dc": "http://purl.org/dc/elements/1.1/",
+            "rdf": "http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+          },
+          "dc:title": {
+            "@type": "rdf:Alt",
+            "rdf:_1": {
+              "@language": "en-us",
+              "@value": "My Cube Mesh"
+            }
+          }
+        }
+      ]
+    }
+  },
+  ...
+}
+```
+
+## License Information
+
+This model is licensed under a [Creative Commons Attribution 4.0 International License](http://creativecommons.org/licenses/by/4.0/).